Guy's Behavior

I thought this guy liked me but he asked for our mutual friend’s Snapchat.. Huh?

So this guy and I at work had been showing signs of interest, I swear.. I had no doubt because of how he’d act differently to me than others, and how he’d look at me. And he would act shy around me and not look me in the eyes. We’re both introverts and quiet, without much experience. He’s nerdy too. Today was the last day I’d see him at our work as he was quitting. I came in to work just as he was leaving. I only see him on weekends but today I worked. I don’t think he expected to see me before he left because he looked surprised but again would divert his eyes. I caught the tail end of him getting a Snapchat of a coworkers from another,( he asked her earlier that day) but when I asked my coworker she said it wasn’t anything romantic and she’d give him my number. I’m just so confused why he’d get her Snapchat and not mine when he seemed interested in me? He doesn’t seem like the kind of guy to go after women. Like i said, he’s really more quiet. As he left he stared at me saying it was his last day but then slowly walked away? I’m so confused.
I thought this guy liked me but he asked for our mutual friend’s Snapchat.. Huh?
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